Codex Oracle

Core Purpose

Offload specific types of work to OpenAI's GPT-5.2-Codex - their most advanced agentic coding model - when deep reasoning and extended thinking would produce better results. This skill turns Codex into a specialized consultant that Claude orchestrates.

When to Use This Skill

Ideal use cases:

• Complex multi-step planning that benefits from extended reasoning
• Architecture decisions with many interacting constraints
• Debugging complex issues where root cause is unclear
• Algorithm design and optimization
• Code review for subtle bugs or security issues
• Large refactors and code migrations
• Generating comprehensive test cases
• Evaluating tradeoffs across many dimensions
• Second opinion on your approach before implementation